Which of the problems listed would came the discharge temperature of an R-12 refrigeration compressor to increase?（）

Who is responsible for ensuring that someone is assigned to close the watertight doors in an emergency?（）

A grease gun is generally used to lubricate a （）.

If the head pressure of a reciprocating refrigeration compressor is excessive, （）.

If the relief valve on the discharge side of a hydraulic pump lifts, the cause could be （）.

If you are given the job of adding hydraulic fluid to a mooring winch, and are not certain as to the type of fluid to use, you should （）.

Heavy wear in a particular area of the inner circumference of a packing ring may be caused by （）.

An excessive charge of refrigerant in an air-cooled refrigeration system can cause （）.

A salinity indicator is used to determine the （）.

An internal bypass is provided on some hydraulic system suction strainers to help reduce the possibility of （）.